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Title:

Image Requirements for Three-Dimensional Measurements of Pavement Macrotexture

Accession Number:

01089571

Record Type:

Component

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Order URL: http://worldcat.org/isbn/9780309113403

Abstract:

This paper examines the effect of wavelength range on the estimation of pavement macrotexture quality from a three-dimensional (3-D) surface model. Macrotexture indicators computed from two-dimensional (2-D) profiles are compared with power spectrum energy computed from 3-D surface heights in the frequency domain. Pavement samples with different types of surface conditions were evaluated by means of a noncontact photometric stereo system. For each pavement sample, surface heights were recovered and a 3-D surface model was constructed. Surface profiles were also measured manually with a dial gauge. The surface heights in frequency domain were divided into 10 wavelength ranges. Power spectrum energy was computed for each wavelength range. The correlation between the 2-D indicators (mean profile depth and root mean square roughness) and the power spectrum energy was examined. It was found that the texture indicators computed from the 3-D recovered surface could represent the 2-D indicators adequately. Moreover, the power spectrum energy provided a good estimation of the 2-D indicators when it was computed from wavelength ranges of approximately 13 times the expected range of the 2-D indicators.

Monograph Accession #:

01117265

Language:

English

Authors:

El Gendy, Amin
Shalaby, Ahmed

Pagination:

pp 126-134

Publication Date:

2008

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Issue Number: 2068
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

9780309113403

Media Type:

Print

Features:

Figures (12) ; References (10) ; Tables (2)

Uncontrolled Terms:

Subject Areas:

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

Files:

TRIS, TRB, ATRI

Created Date:

Jan 29 2008 4:54PM

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